> 1. Sometimes when I right-click on the chart to format a axes it may > take up to 5 minutes to display the window with the chart format > controls. During this time task manager says the application is not > responding. > > 2. When plotting anything with size (I am trying to plot 5 minutes of > data at 512 samples/sec) the program slows to a crawl. If I plot a > double data (take the Y data from the waveform) it works great. Why > is there so much overhead with a waveform chart? Anyway to fix this? > > 3. Unrelated to a waveform chart but related to item 1. Sometimes > when I try to save my VI (~470 kb) it goes into limbo and may take > minutes. Again the task manager says it is "not responding". This > seems to be a theme with LV 7.0. Has anyone else run into this > problem?
Without looking at the waveform chart, it is hard to say. Things like autoscale will slow teh chart down a bit as it then needs to traverse more data looking for min/max. And when the scales do need to change a bit, all the data needs to be replotted, not just the new stuff. Other things that slow down a chart are to make its background transparent, and to make it overlapped. Finally, full screen updates on a big monitor mean lots of data needs to be moved around to draw lines and rectangles, and that either comes down to the CPU or video card. If you have more questions, or a VI to look at, post again. Greg McKaskle
